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提出了聚乳酸Mark-Houwink方程(简称MH方程)常数订定的方法。订定了在35℃、四氢呋喃中聚乳酸的MH方程常数:K=2.59×10~(-4)dl/g,α=0.689。验证了K、α值的可靠性,GPC测[η]′和实测[η]间的相对偏差,一般在8.0％以下,最大不超过16.0％。
Proposed a polylactic acid Mark-Houwink equation (referred to MH equation) constant set method. The MH equation constant for polylactic acid in THF was set at 35 ° C: K = 2.59 × 10 -4 (dl / g) and α = 0.689. The reliability of K, α was verified. The relative deviation between GPC and [η] was generally less than 8.0% and no more than 16.0%.